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J. G. Arnold, ; D. N. Moriasi, ; P. W. Gassman, ; K. C. Abbaspour, ; M. J. White, ; R. Srinivasan, ; C. Santhi, ; R. D. Harmel, ; A. van Griensven, ; M. W. Van Liew, ; N. Kannan, ; M. K. Jha, . (2012). SWAT: Model Use, Calibration, and Validation. Transactions of the ASABE, 55(4), 1491–1508. doi:10.13031/2013.42256 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research